Ball Nut End Component Structure for Rigidity and Smooth Reflow
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Solution Overview
Problem
Conventional ball nut assemblies suffer from low rigidity, noise susceptibility, and increased damage risk due to open grooves, which also lead to ball clogging issues when the guide length is longer, hindering smooth ball rolling.
Innovation Solution
The ball nut assembly design includes a nut body with an outer and inner ring wall, a ball groove, reflow channel, assembling groove, and fixing hole, along with an end component featuring a reflow bend and fixing portion, which enhances strength, reduces noise, and maintains a flush surface for improved assembly, while shortening the guide length to prevent clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an open groove is provided on the nut to assemble a ball circulator, then the ball circulator can be assembled, but the rigidity of the nut becomes low and it becomes susceptible to noise
Solution Approach 1:
The invention divides the groove structure into two parts: a through groove for ball circulator assembly and a blind groove that does not penetrate the outer ring wall. This segmentation allows the ball circulator to be assembled while maintaining nut rigidity by providing a closed structure that prevents deformation and noise.
Solution Approach 2:
The blind groove is nested within the nut structure, creating a closed cavity that houses part of the ball circulator path. This nested structure maintains the external integrity and rigidity of the nut while still allowing the ball circulator to function within the nested space.
2Ease of manufacture
If the guide portion of the ball circulator is made longer, then the ball circulator can be assembled, but ball clogging occurs easily and balls cannot roll smoothly
Solution Approach 1:
The invention introduces a reflow channel that creates a dynamic ball circulation path. Balls that may become clogged in the guide portion can回流 through the reflow channel back to the ball groove, creating a dynamic circulation system that prevents clogging and ensures smooth ball rolling.
Solution Approach 2:
The reflow channel acts as an intermediary path between the guide portion and the ball groove. It provides an alternative route for balls to return to the circulation path, mediating the problem of clogging by offering a backup circulation path.
3Ease of manufacture
If the guide portion of the ball circulator is made longer, then the ball circulator can be assembled, but the balls cannot roll smoothly due to clogging
Solution Approach 1:
The reflow channel creates a dynamic circulation system where balls can continuously circulate between the guide portion, ball groove, and reflow channel. This dynamic system ensures reliable ball circulation by providing multiple paths and preventing dead ends where clogging could occur.
Solution Approach 2:
The reflow channel serves as an intermediary circulation path that enhances reliability by providing an alternative route for ball circulation, ensuring that the ball circulator system remains reliable even when the guide portion is long.
Data Source
AI summary
A ball nut assembly and an end component thereof are provided. The ball nut assembly includes a nut body and an end component. The nut body includes an outer ring wall, a ball groove, an assembling groove, and a fixing hole. The assembling groove is arranged on an end portion, and the assembling groove has a first side surface, a second side surface, and a bottom surface. The end component is accommodated in the assembling groove of the nut body, and includes a first contact surface, a second contact surface, a radial surface, a fixing portion, and a reflow bend. The fixing portion is arranged on the radial surface. The first and second contact surfaces contact the first and second side surfaces of the assembling groove in a force-fit manner, respectively, and two ends of the reflow bend respectively correspond to the ball groove and the reflow channel.